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Finding the Fourth Proportional to 554.77, 764.40 and 504.15

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Solution

The fourth proportional to 554.77, 764.40 and 504.15 is: 694.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.77 : 764.40 = 504.15 : x
  2. Step 2: Convert to fraction form
    554.77/764.40 = 504.15/x
  3. Step 3: Cross multiply
    554.77x = 764.40 × 504.15
  4. Step 4: Simplify right side
    554.77x = 385,372.26
  5. Step 5: Solve for x
    x = 385,372.26/554.77
  6. Step 6: Final answer
    x = 694.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.